WO2014024278A1 - Appareil de réception de diffusion - Google Patents

Appareil de réception de diffusion Download PDF

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Publication number
WO2014024278A1
WO2014024278A1 PCT/JP2012/070234 JP2012070234W WO2014024278A1 WO 2014024278 A1 WO2014024278 A1 WO 2014024278A1 JP 2012070234 W JP2012070234 W JP 2012070234W WO 2014024278 A1 WO2014024278 A1 WO 2014024278A1
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WO
WIPO (PCT)
Prior art keywords
frequency
wave
filter
broadcast
radio station
Prior art date
Application number
PCT/JP2012/070234
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English (en)
Japanese (ja)
Inventor
勇人 奥田
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2014529197A priority Critical patent/JPWO2014024278A1/ja
Priority to PCT/JP2012/070234 priority patent/WO2014024278A1/fr
Publication of WO2014024278A1 publication Critical patent/WO2014024278A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H04B1/1036—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters

Definitions

  • the present invention relates to a broadcast receiving apparatus mounted on a moving body such as a vehicle.
  • Patent Document 1 discloses a vehicle receiver that converts a received high-frequency signal into an intermediate-frequency signal, and then passes it through one of filters having different pass bands, and detects the subsequent signal. .
  • the location where the adjacent interference wave and the intermodulation interference wave are generated and the frequency information are stored in association with each other, and the intermediate frequency is determined based on the frequency information of the interference wave determined from the stored contents according to the traveling location of the vehicle.
  • the filter that passes the signal is switched.
  • Patent Document 1 An unexpected noise component is generated when a high-frequency signal is converted to an intermediate frequency and cannot be completely removed by a subsequent filter, and reception quality and voice quality may deteriorate. There was a problem that there was.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a broadcast receiving apparatus that can appropriately remove external noise.
  • a broadcast receiving apparatus is a broadcast receiving apparatus that is mounted on or carried by a mobile body and receives broadcast waves, and a storage unit that stores a position of a radio station and a frequency of a radio wave transmitted from the radio station, When receiving a desired broadcast wave based on the adaptive filter section that filters the received broadcast wave high-frequency signal, and the position information of the mobile unit and the position of the radio station stored in the storage section, transmitted from the radio station
  • a determination unit that determines whether or not an interference wave due to the generated radio wave is generated, and when the determination unit determines that the interference wave is generated, a desired broadcast wave passes and the frequency of the interference wave is a pass frequency band
  • a selection unit that selects a pass frequency band of the adaptive filter unit that is outside.
  • FIG. 1 is a diagram illustrating a main configuration of a broadcast receiving device according to Embodiment 1.
  • FIG. 3 is a flowchart showing an operation of the broadcast receiving apparatus according to the first embodiment.
  • 6 is a diagram illustrating a method for removing external noise in the first embodiment.
  • FIG. It is a figure which shows the main structures of the broadcast receiver which concerns on Embodiment 2 of this invention.
  • 6 is a flowchart showing an operation of the broadcast receiving apparatus according to the second embodiment.
  • 10 is a diagram illustrating a method for removing external noise according to Embodiment 2.
  • FIG. 1 is a diagram illustrating a main configuration of a broadcast receiving device according to Embodiment 1.
  • FIG. 3 is a flowchart showing an operation of the broadcast receiving apparatus according to the first embodiment.
  • 6 is a diagram illustrating a method for removing external noise in the first embodiment.
  • FIG. It is a figure which shows the main structures of the broadcast receiver which concerns on Embodiment 2 of this invention
  • FIG. 1 is a diagram illustrating external noise that cannot be removed by the intermediate frequency filter.
  • FIG. 1A shows the configuration of a reception system in a conventional broadcast receiving apparatus
  • FIG. 1B schematically shows the influence of external noise during frequency conversion.
  • the received broadcast wave high-frequency signal is amplified by a high-frequency amplifier circuit after only a predetermined band component is extracted by a high-frequency filter, and is input to a frequency conversion circuit.
  • the mixer of the frequency conversion circuit mixes the oscillation signal generated by the local oscillator with the output from the high frequency amplifier circuit and converts the output to an intermediate frequency.
  • the intermediate frequency signal is further frequency-converted to a baseband frequency later (superheterodyne method).
  • the noise component when there is external noise in the pass frequency band of the high frequency filter, the noise component remains in the frequency band that cannot be removed by the intermediate frequency filter after frequency conversion (intermediate frequency).
  • the noise in the pass frequency band of the filter) and the reception quality may be degraded.
  • noise components generated at the time of frequency conversion may affect the amplification processing in the intermediate frequency amplifier circuit, and noise components may remain in the baseband frequency band, thereby degrading voice quality.
  • FIG. 2 is a block diagram showing the configuration of the broadcast receiving apparatus according to the present invention.
  • the broadcast receiving apparatus shown in FIG. 2 is a broadcast receiving apparatus that receives a radio broadcast wave (FM modulated wave) mounted on a moving body such as a vehicle or carried by a moving body such as a human being. Connect to the terminal 14 to obtain predetermined information.
  • a radio broadcast wave FM modulated wave
  • the configuration includes an antenna 1, an antenna input circuit 2, a high frequency filter 3a, a high frequency amplifier circuit 3, an adaptive filter unit 4, a frequency conversion circuit 5, an intermediate frequency filter 6a, an intermediate frequency amplifier circuit 6, a detection circuit 7, and stereo demodulation.
  • a circuit 8, a de-emphasis circuit 9, a low frequency amplifier circuit 10, a speaker 11, a selection circuit 12 and an internal memory 13 are provided.
  • the antenna input circuit 2 outputs the high frequency signal of the broadcast wave received by the antenna 1 to the high frequency filter 3a.
  • the high frequency filter 3 a extracts only a predetermined band component from the input high frequency signal and amplifies it by the high frequency amplifier circuit 3.
  • the adaptive filter unit 4 is provided in the previous stage of the frequency conversion circuit 5 and allows a high-frequency signal in a desired pass frequency band with reduced external noise to pass from the output of the high-frequency amplifier circuit 3.
  • the frequency conversion circuit 5 receives the high frequency signal filtered by the adaptive filter unit 4 and converts the frequency to an intermediate frequency. From the intermediate frequency signal, only a predetermined band component is extracted by the intermediate frequency filter 6 a and input to the intermediate frequency amplifier circuit 6.
  • the intermediate frequency signal amplified to a level that can be detected by the intermediate frequency amplifier circuit 6 is detected by a detection circuit 7 from a desired broadcast station and demodulated by a stereo demodulation circuit 8.
  • the de-emphasis circuit 9 restores the emphasized high-frequency band signal level of the received wave.
  • the output of the de-emphasis circuit 9 is amplified by the low frequency amplifier circuit 10 and output from the speaker 11 as audio.
  • the selection circuit 12 When the selection circuit 12 receives a desired broadcast wave based on the position information of the mobile body and the position of the wireless station stored in the internal memory 13, whether the interference wave due to the radio wave transmitted from the wireless station is generated. If it is determined whether or not an interference wave is generated, a pass frequency band of the adaptive filter unit 4 that passes a desired broadcast wave and the frequency of the interference wave is outside the pass frequency band is selected.
  • the internal memory 13 is a storage unit that stores the position of the wireless station and the frequency of the radio wave transmitted from the wireless station. The position of the radio station and the frequency of the radio wave transmitted from the radio station are used to determine whether or not an interference wave due to the radio wave transmitted from the radio station is generated when a desired broadcast wave is received.
  • the internal memory 13 may also store transmission power from the wireless station.
  • the portable terminal 14 is a portable terminal that has a position of a wireless station, a function of acquiring a frequency of a radio wave transmitted from the wireless station, and a function of measuring its own position.
  • the function of measuring its own position can be realized by a GPS (Global Positioning System) receiver. That is, the latitude / longitude obtained by analyzing the GPS signal is used. In addition, it may replace with a GPS receiver and may perform position measurement using a gyroscope, a distance sensor, etc.
  • GPS Global Positioning System
  • interference wave information information indicating the position of the radio station that generates a transmission wave that can become an interference wave and frequency information of the transmission wave are obtained by communication means such as broadcasting or telephone. get.
  • a television tower a radio tower that transmits a television broadcast wave that can be an interference wave is identified as a wireless station, and the position and frequency information of the television broadcast wave are acquired.
  • the portable terminal 14 is realizable with the existing communication terminals, such as a mobile telephone, a smart phone, and a portable information terminal. Even if the broadcast receiving apparatus according to the present invention does not have the function of the mobile terminal 14, the broadcast receiving apparatus can acquire the information only by communication connection with the mobile terminal 14. In addition, it is possible to remove interference waves more accurately by providing versatility to obtain detailed information by connecting to various portable terminals 14.
  • FIG. 2 shows the case where the position of the wireless station, the frequency of the radio wave transmitted from the wireless station, and the position information of the moving body are acquired from the mobile terminal 14. You may provide the communication part which has a position, the function to acquire the frequency of the electromagnetic wave transmitted from this radio station, and the function to measure own position.
  • FIG. 3 is a diagram showing the main configuration of the broadcast receiving apparatus according to Embodiment 1, and shows the configuration of the adaptive filter unit 4 and the selection circuit 12 in the front end.
  • the selection circuit 12 includes an interference wave presence / absence determination unit 15 and a filter path selection unit 16, and the adaptive filter unit 4 includes bandpass filters 17 to 19 and an RF switch 20.
  • the adaptive filter unit 4 includes bandpass filters 17 to 19 having different pass frequency bands, and the selection circuit 12 selects a desired broadcast wave from the bandpass filters 17 to 19. A band-pass filter that passes and whose interference wave frequency is outside the pass frequency band is selected.
  • the interference wave presence / absence determination unit 15 is a determination unit that determines presence / absence of an interference wave in receiving a desired broadcast wave. For example, when a desired broadcast wave is received by searching for the position of the wireless station stored in the internal memory 13 using the current vehicle position information acquired from the mobile terminal 14, the wireless station It is determined whether or not an interference wave due to the transmitted radio wave is generated. When it is determined that the interference wave is generated, the frequency of the interference wave is determined from the frequency of the radio wave transmitted from the wireless station. Further, the filter path selection unit 16 selects a desired broadcast wave from the bandpass filters 17 to 19 based on the desired broadcast wave frequency and the interference wave frequency determined by the interference wave presence / absence determination unit 15. It is a selection unit that selects a bandpass filter that passes and the frequency of the interference wave is outside the pass frequency band.
  • the bandpass filters 17 to 19 are analog filters that have different pass frequency bands and pass signals in the pass frequency band from high-frequency analog signals. In the example of FIG. 3, the configuration including the three band-pass filters 17 to 19 is shown, but four or more filters having different pass frequency bands may be provided.
  • the RF switch 20 is a switch unit that switches a filter connected to the output path from the bandpass filters 17 to 19. The filtered high frequency analog signal output from the RF switch 20 is input to the frequency conversion circuit 5 shown in FIG.
  • FIG. 4 is a flowchart showing the operation of the broadcast receiving apparatus according to the first embodiment, and shows details of processing for determining the presence / absence of an interfering wave in a received wave and selecting a filter path through which the received wave passes in the front end.
  • the mobile terminal 14 provides interference wave information by connecting to the broadcast receiving apparatus according to Embodiment 1 by wire or wireless.
  • the interference wave information is information indicating the position of the radio station and the frequency of the radio wave transmitted from the radio station.
  • the broadcast receiving apparatus according to Embodiment 1 acquires the interference wave information from the mobile terminal 14, it stores it in the internal memory 13 (step ST1).
  • the selection circuit 12 of the broadcast receiving apparatus according to Embodiment 1 acquires current position information from the mobile terminal 14 (step ST2).
  • the interference wave presence / absence determination unit 15 of the selection circuit 12 receives a desired broadcast wave using the current position information acquired from the mobile terminal 14 and the position of the wireless station stored in the internal memory 13, It is determined whether or not there is an interference wave due to the radio wave (step ST3).
  • the interference wave presence / absence determination unit 15 is configured to transmit radio waves from all wireless stations that can be received at the current position based on the current position of the mobile body and the position of the wireless station stored in the internal memory 13. Determine the frequency. Specifically, from the current position of the mobile unit and the position of the radio station, whether the distance from the mobile unit to the radio station is calculated, and can be received by assuming a predetermined transmission power and comparing with a threshold of distance Determine whether or not.
  • the frequency of receivable radio waves is determined by performing for all wireless stations within a predetermined range centering on the moving body.
  • the frequency of the interference wave is determined based on the frequency of the radio wave from the receivable radio station. For example, out of all the frequencies of radio waves that can be received at the current position, a frequency excluding a desired broadcast wave frequency in the pass frequency band of the high frequency filter 3a is set as an interference wave.
  • the interference wave presence / absence determination unit 15 notifies the filter path selection unit 16 to that effect.
  • the filter path selection unit 16 selects a default bandpass filter 17 from the bandpass filters 17 to 19, and the RF switch 20 of the adaptive filter unit 4. Is specified.
  • the interference wave presence / absence determination unit 15 determines that there is an interference wave, the frequency of the desired broadcast wave (desired wave), and The filter path selection unit 16 is notified of the frequency of the interference wave.
  • the filter path selection unit 16 selects the bandpass filter 18 or the bandpass filter 19 that passes the desired wave and the frequency of the interference wave is outside the pass frequency band.
  • the RF switch 20 of the adaptive filter unit 4 is designated.
  • the high-frequency signal that is the received wave is filtered through the band-pass filters 17 to 19 (step ST5).
  • the RF switch 20 switches the bandpass filter designated by the filter path selection unit 16 from the bandpass filters 17 to 19 that have filtered the high-frequency signal, to the filter that connects the output path (step ST6).
  • the RF switch 20 dynamically passes the desired wave (FM modulated wave) as shown in FIG. 5 and dynamically changes the filter path to a bandpass filter in which the frequency of the interference wave (external noise) is outside the pass frequency band. By switching, a high-frequency signal with reduced external noise can be extracted even if the frequency is converted to an intermediate frequency.
  • the position of the radio station, the internal memory 13 for storing the frequency of the radio wave transmitted from the radio station, and the adaptation for filtering the high frequency signal of the received broadcast wave Based on the filter unit 4 and the position information of the mobile unit and the position of the radio station stored in the internal memory 13, when receiving a desired broadcast wave, is an interference wave generated by the radio wave transmitted from the radio station generated?
  • the interference wave presence / absence determination unit 15 that determines whether or not the interference wave presence / absence determination unit 15 determines that an interference wave is generated, a desired broadcast wave passes and the frequency of the interference wave is outside the pass frequency band.
  • the filter path selection unit 16 that selects the pass frequency band of the adaptive filter unit 4 is provided.
  • the adaptive filter unit 4 includes the plurality of bandpass filters 17 to 19 having different pass frequency bands
  • the filter path selection unit 16 includes the plurality of bandpass filters 17.
  • a band-pass filter that passes a desired broadcast wave and whose interference wave frequency is outside the pass frequency band is selected from ⁇ 19.
  • the broadcast receiving apparatus according to the first embodiment is connected to the mobile terminal 14 even if it does not have the above function. Only the above information can be acquired.
  • FIG. FIG. 6 is a diagram showing a main configuration of a broadcast receiving apparatus according to Embodiment 2 of the present invention.
  • the broadcast receiving apparatus shown in FIG. 6 is mounted on a moving body such as a vehicle or carried by a moving body such as a human and receives radio broadcast waves (FM modulated waves), as in the first embodiment.
  • the broadcast receiving apparatus has an adaptive filter unit 4A and a selection circuit 12A at the front end.
  • the selection circuit 12 ⁇ / b> A includes an interference wave presence / absence determination unit 21 and a filter parameter selection unit 22, and the adaptive filter unit 4 ⁇ / b> A includes an A / D conversion unit 23 and a bandpass filter 24.
  • the adaptive filter unit 4A has a band-pass filter 24 whose pass frequency band is variable according to the filter parameter, the selection circuit 12A passes a desired broadcast wave, and the frequency of the interference wave is A filter parameter outside the pass frequency band is selected and installed in the band pass filter 24.
  • the interference wave presence / absence determination unit 21 is a determination unit that determines the presence or absence of an interference wave in receiving a desired broadcast wave, as in the first embodiment. For example, when a desired broadcast wave is received by searching for the position of the wireless station stored in the internal memory 13 using the current vehicle position information acquired from the mobile terminal 14, the wireless station It is determined whether or not an interference wave due to the transmitted radio wave is generated. If it is determined that the interference wave is generated, the frequency of the interference wave is determined from the frequency of the radio wave transmitted from the radio station.
  • the filter parameter selection unit 22 passes the desired broadcast wave based on the desired broadcast wave frequency and the interference wave frequency determined by the interference wave presence / absence determination unit 21, and the interference wave frequency passes.
  • a selection unit that selects a filter parameter that is outside the frequency band and sets the filter parameter in the bandpass filter 24.
  • the filter parameter is, for example, an adaptive filter coefficient that determines a pass frequency band.
  • the A / D conversion unit 23 is an analog-digital conversion unit that converts a high-frequency signal of a received broadcast wave from an analog signal to a digital signal.
  • the band-pass filter 24 is a digital filter that has a variable pass frequency band according to the filter parameter and passes a signal in the pass frequency band from the digital signal converted by the A / D converter 23. For example, it is realized by a notch filter that attenuates a component of a specific frequency band from an input signal.
  • the filtered high-frequency digital signal output from the bandpass filter 24 is input to the frequency conversion circuit 5 shown in FIG.
  • FIG. 7 is a flowchart showing the operation of the broadcast receiving apparatus according to the second embodiment, and shows details of processing for determining whether there is an interference wave in the received wave and selecting a filter path through which the received wave passes in the front end.
  • the mobile terminal 14 provides interference wave information by connecting to the broadcast receiving apparatus according to the second embodiment by wire or wireless.
  • the interference wave information is information indicating the position of the radio station and the frequency of the radio wave transmitted from the radio station.
  • the broadcast receiving apparatus according to Embodiment 2 stores the interference wave information from the mobile terminal 14 in the internal memory 13 (step ST1a).
  • the selection circuit 12A of the broadcast receiving apparatus according to Embodiment 2 acquires current position information from the mobile terminal 14 (step ST2a).
  • the interference wave presence / absence determining unit 21 of the selection circuit 12A receives a desired broadcast wave using the current position information acquired from the mobile terminal 14 and the position of the wireless station stored in the internal memory 13, the signal from the wireless station is received. It is determined whether there is an interference wave due to the radio wave (step ST3a). Up to this point, the processing is the same as that described with reference to FIG. 4 in the first embodiment.
  • the interfering wave presence / absence determining unit 21 notifies the filter parameter selecting unit 22 to that effect.
  • the filter parameter selection unit 22 selects a default filter parameter and sets it in the bandpass filter 24 of the adaptive filter unit 4A.
  • the default filter parameter is a parameter that allows the entire frequency band not subjected to the filtering process to pass.
  • the interference wave presence / absence determination unit 21 indicates that there is an interference wave, the frequency of the desired broadcast wave (desired wave), and the determined interference.
  • the frequency of the wave is notified to the filter parameter selection unit 22.
  • the filter parameter selection unit 22 selects a filter parameter that passes the desired wave and the frequency of the interference wave is outside the pass frequency band and sets the filter parameter in the bandpass filter 24. (Step ST4a).
  • the high-frequency signal which is a received wave, is converted into a digital signal by the A / D converter 23, and then filtered by the bandpass filter 24 (step ST5a).
  • the filter parameter selection unit 22 selects a filter parameter that passes the desired wave (FM modulated wave) and the frequency of the interference wave (external noise) is outside the pass frequency band.
  • the bandpass filter 24 such as a notch filter, a high-frequency signal with reduced external noise can be extracted even if the frequency is converted to an intermediate frequency.
  • the adaptive filter unit 4A has the A / D conversion unit 23 that converts the high frequency signal of the received broadcast wave into a digital signal, and the pass frequency band is variable depending on the filter parameter.
  • a band-pass filter 24 that passes a signal in a pass frequency band from the digital signal converted by the A / D converter 23, and the filter parameter selector 22 passes a desired broadcast wave and interferes with it.
  • a filter parameter whose wave frequency is outside the pass frequency band is selected and set in the bandpass filter 24.
  • the circuit scale can be reduced and the overall apparatus can be reduced in size.
  • the filter parameters are sequentially updated to be suitable for the travel location and area of the vehicle, it is possible to provide a broadcast receiving apparatus that ensures a wide area.
  • the broadcast receiving apparatus according to the present invention receives a radio broadcast is taken as an example.
  • the present invention can also be applied as it is when receiving a television broadcast.
  • any combination of each embodiment, any component of each embodiment can be modified, or any component can be omitted in each embodiment. .
  • the broadcast receiving apparatus can appropriately remove external noise, it is suitable for a vehicle-mounted broadcast receiving apparatus in which the reception environment changes due to movement of the vehicle.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)

Abstract

L'invention concerne un appareil de réception de diffusion qui comporte : une mémoire interne (13) qui stocke la position d'une station sans fil, et la fréquence d'ondes radio émises à partir de la station sans fil ; une section de filtre adaptatif (4) qui filtre des signaux haute fréquence d'ondes de diffusion reçues ; une section de détermination de présence/absence d'onde perturbatrice (15) qui détermine, au moment de la réception d'ondes de diffusion souhaitées, si des ondes perturbatrices doivent ou non être générées en raison des ondes radio émises à partir de la station sans fil, sur la base des informations de position d'un corps mobile, et de la position de la station sans fil, ladite position ayant été stockée dans la mémoire interne (13) ; et une section de sélection de trajet de filtre (16) qui, dans les cas dans lesquels il est déterminé, par la section de détermination de présence/absence d'onde perturbatrice (15), que les ondes perturbatrices doivent être générées, sélectionne une bande de fréquences de passage de la section de filtre adaptatif (4) de telle sorte que les ondes de diffusion souhaitées sont amenées à passer, et la fréquence des ondes perturbatrices est hors de la bande de fréquences de passage.
PCT/JP2012/070234 2012-08-08 2012-08-08 Appareil de réception de diffusion WO2014024278A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2014529197A JPWO2014024278A1 (ja) 2012-08-08 2012-08-08 放送受信装置
PCT/JP2012/070234 WO2014024278A1 (fr) 2012-08-08 2012-08-08 Appareil de réception de diffusion

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Application Number Priority Date Filing Date Title
PCT/JP2012/070234 WO2014024278A1 (fr) 2012-08-08 2012-08-08 Appareil de réception de diffusion

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WO2014024278A1 true WO2014024278A1 (fr) 2014-02-13

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2016138936A1 (fr) * 2015-03-03 2016-09-09 Telefonaktiebolaget Lm Ericsson (Publ) Compensation de filtre de sélection de canal

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JP2006523044A (ja) * 2003-01-28 2006-10-05 レイセオン・カンパニー アナログのフロントエンドを直接ＲＦサンプリングによりデジタル化する混合された技術のＭＥＭＳ／ＳｉＧｅＢｉＣＭＯＳ
JP2007288529A (ja) * 2006-04-17 2007-11-01 Denso Corp 車両用受信機
JP2010258733A (ja) * 2009-04-24 2010-11-11 Alps Electric Co Ltd 放送信号受信装置

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JP2007067588A (ja) * 2005-08-29 2007-03-15 Toyota Industries Corp 移動無線受信システムおよびそのプリセット方法
CN102187586B (zh) * 2008-10-23 2015-02-25 Nxp股份有限公司 用于自适应射频滤波的系统和方法
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JP2006523044A (ja) * 2003-01-28 2006-10-05 レイセオン・カンパニー アナログのフロントエンドを直接ＲＦサンプリングによりデジタル化する混合された技術のＭＥＭＳ／ＳｉＧｅＢｉＣＭＯＳ
JP2007288529A (ja) * 2006-04-17 2007-11-01 Denso Corp 車両用受信機
JP2010258733A (ja) * 2009-04-24 2010-11-11 Alps Electric Co Ltd 放送信号受信装置

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Publication number Priority date Publication date Assignee Title
WO2016138936A1 (fr) * 2015-03-03 2016-09-09 Telefonaktiebolaget Lm Ericsson (Publ) Compensation de filtre de sélection de canal
US10044388B2 (en) 2015-03-03 2018-08-07 Telefonaktiebolaget Lm Ericsson (Publ) Channel selection filter compensation

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